msdos/int33.c

   1 /*
   2  * DOS interrupt 33h handler
   3  */
   4
   5 #include <stdlib.h>
   6 #include "winuser.h"
   7 #include "miscemu.h"
   8 #include "dosexe.h"
   9 #include "debug.h"
  10
  11 DEFAULT_DEBUG_CHANNEL(int)
  12
  13 typedef struct {
  14   DWORD x, y, but;
  15   FARPROC16 callback;
  16   WORD callmask;
  17 } MOUSESYSTEM;
  18
  19 /**********************************************************************
  20  *          INT_Int33Handler
  21  *
  22  * Handler for int 33h (MS MOUSE).
  23  */
  24 void WINAPI INT_Int33Handler( CONTEXT *context )
  25 {
  26   MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
  27
  28   switch (AX_reg(context)) {
  29   case 0x00:
  30     TRACE(int,"Reset mouse driver and request status\n");
  31     AX_reg(context) = 0xFFFF; /* installed */
  32     BX_reg(context) = 3;      /* # of buttons */
  33     sys = calloc(1,sizeof(MOUSESYSTEM));
  34     DOSVM_SetSystemData(0x33, sys);
  35     break;
  36   case 0x03:
  37     TRACE(int,"Return mouse position and button status\n");
  38     BX_reg(context) = sys->but;
  39     CX_reg(context) = sys->x;
  40     DX_reg(context) = sys->y;
  41     break;
  42   case 0x0C: /* Define interrupt subroutine */
  43     TRACE(int,"Define mouse interrupt subroutine\n");
  44     sys->callmask = CX_reg(context);
  45     sys->callback = (FARPROC16)PTR_SEG_OFF_TO_SEGPTR(ES_reg(context), DX_reg(context));
  46     break;
  47   default:
  48     INT_BARF(context,0x33);
  49   }
  50 }
  51
  52 typedef struct {
  53   FARPROC16 proc;
  54   WORD mask,but,x,y,mx,my;
  55 } MCALLDATA;
  56
  57 static void MouseRelay(LPDOSTASK lpDosTask,PCONTEXT context,void *mdata)
  58 {
  59   MCALLDATA *data = (MCALLDATA *)mdata;
  60   CONTEXT ctx = *context;
  61
  62   AX_reg(&ctx) = data->mask;
  63   BX_reg(&ctx) = data->but;
  64   CX_reg(&ctx) = data->x;
  65   DX_reg(&ctx) = data->y;
  66   SI_reg(&ctx) = data->mx;
  67   DI_reg(&ctx) = data->my;
  68   CS_reg(&ctx) = SELECTOROF(data->proc);
  69   IP_reg(&ctx) = OFFSETOF(data->proc);
  70   free(data);
  71   DPMI_CallRMProc(&ctx, NULL, 0, 0);
  72 }
  73
  74 void WINAPI INT_Int33Message(UINT message,WPARAM wParam,LPARAM lParam)
  75 {
  76   MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
  77   WORD mask = 0;
  78
  79   if (!sys) return;
  80   sys->x = LOWORD(lParam);
  81   sys->y = HIWORD(lParam);
  82   switch (message) {
  83   case WM_MOUSEMOVE:
  84     mask |= 0x01;
  85     break;
  86   case WM_LBUTTONDOWN:
  87   case WM_LBUTTONDBLCLK:
  88     sys->but |= 0x01;
  89     mask |= 0x02;
  90     break;
  91   case WM_LBUTTONUP:
  92     sys->but &= ~0x01;
  93     mask |= 0x04;
  94     break;
  95   case WM_RBUTTONDOWN:
  96   case WM_RBUTTONDBLCLK:
  97     sys->but |= 0x02;
  98     mask |= 0x08;
  99     break;
 100   case WM_RBUTTONUP:
 101     sys->but &= ~0x02;
 102     mask |= 0x10;
 103     break;
 104   case WM_MBUTTONDOWN:
 105   case WM_MBUTTONDBLCLK:
 106     sys->but |= 0x04;
 107     mask |= 0x20;
 108     break;
 109   case WM_MBUTTONUP:
 110     sys->but &= ~0x04;
 111     mask |= 0x40;
 112     break;
 113   }
 114
 115   if ((mask & sys->callmask) && sys->callback) {
 116     MCALLDATA *data = calloc(1,sizeof(MCALLDATA));
 117     data->proc = sys->callback;
 118     data->mask = mask & sys->callmask;
 119     data->but = sys->but;
 120     data->x = sys->x;
 121     data->y = sys->y;
 122     DOSVM_QueueEvent(-1, DOS_PRIORITY_MOUSE, MouseRelay, data);
 123   }
 124 }